Many women prefer to give of sucking his babies. Although the children also grow with formula milk (maternizada), the maternal milk is easier to digest and it contains antibodies that protect the infections baby. Also many women find it very pleasant.

Once it has given birth to the baby, his pituitary gland (hypophysis) begins to increase the quantity of production of a hormone called prolactina.

This one stimulates the cells of the breasts. These cells begin absorbing nutrients of the blood flow and use it to produce milk. As this process takes a very little time, the first days after the birth the breasts produce a fluid one thin and white, called colostrum. As the milk, the colostrum is nourishing and it has antibodies. After 3 ó 5 days the milk takes place. The prolactina controls the quantity, up to the point from which all that the baby takes more milk quantity, more prolactina will produce the pituitary one and more milk will have. When the baby stops sucking the milk production it stops in one week or two. The flow of the maternal milk is controlled by the closing reflex. Of another form the milk would be going out continuously of the breasts. When the baby sucks, the nipples answer ordering sensory impulses to the hyponuptial bed, in the brain.

The hyponuptial bed immediately orders to the pituitary gland to produce hormones (principally oxitocina) that travel across the blood stream. When they come to the breasts, the cells that surround the alveolar cavity, where the milk is stored, contract and, this way, the milk goes out to the conduit. All this process lasts between 30 and 60 seconds. As soon as the maternal milk was established, the reflex of "stop" and "march" is shot easily. Often the same sound of the crying stimulates the reflex. Anyway, the stress can interfere in the reflex.

In this case the people need around him supporting him when it begins giving of sucking. If he feels pain in the nipples while the baby sucks, it can owe to a small break in the nipple. The doctor must recommend to him some ointment that helps him to treat it. If he feels a small hard bundle in the breast, it is possible that a conduit of the milk is blocked. Try with massages and warm cloths. If the bundle does not disappear, call the doctor since there can be an infection (to see Mammary Infection).

If it is like that, he will need an antibiotic. Normally it can keep on giving of sucking the baby, since this one pushes the infection back. The prolactina almost always protects opposite to the pregnancy. Nevertheless, it is better not to be careless because there can be an ovulation during the breast feeding period, although there has not been menstruation. When it stops giving of sucking, unless it does it in a gradual way, his breasts can catch fire and hurt for some days until the milk dries off.

The woman who gives feeding-bottle to the baby from the beginning has the same problem.

The doctor can prescribe some medicine to suppress the milk. If this does not work it can resort to apply to the breasts bags of ice or a few very tight blindfolds.